package com.hongyue.dey03;

import java.util.ArrayList;
import java.util.Collections;

public class Demo {
    public static void main(String[] args) {
        ArrayList<Integer> in = new ArrayList<>();
        Collections.addAll(in, 1, 2, 3, 4, 5, 6, 7, 8, 9);
        System.out.println("in = " + in);

    }
}
